Improvement in combined latch and lock



taiiml :51am

peca entre N. PETRE, oFNnw-YoR-K, N. Y.

Letters- Patent No. 95,506, dated October 5,1869.

*wpv IMPROVEMENT IN COMBINED LATCH AND LOCK.

The Schedule referred to inl these Letters vPatent and making part ofthe same.

- ings, making a part of this specification, in which- `Figure lrepresents, in perspective, a view of the interior of the lockhthe coverbeing removed.

Figure 2 represents a section through the lock. Figure 3 represents aplan of the interior thereof. Figures 4 and 5 represent modifications ofthe same y general plan of construction and of operation, as that shownin figs. 1, 2, and 3. Y `The locks herein described and claimed may betermed latch-locks, as they all have a latch or bolt that isoperated byknobs on each side of the door,

when said bolt/or latch is not otherwise controlled, by a key, or itsequivalent, turning a lever or eccentric hub in the lock, and thusdisconnecting the bolt or latch from the action of the knobs.

The locks herein shown and described involve the .generalcharacteristics of vconstruction and operation,

as shown and described in the patent granted to me on the 30th of July,1867, but vary from that lock in their detail of construction, whichadapts ,them for more general purposes, and makes them more secure aslocks against being picked.

To enable others skilled inthe art to make and use my invention, I willproceed to describe the same with reference to thegdrawings. f

In figs. l and 3, A represents the end of a bevelledbolt, projectingthrough the edge of the box 'or case Bl VThis boltA within the caseispivoted at a to what may be termed the tumbler or interior portion, O,of the bolt. y

This portion C, in addition to its sliding with the bolt, has a motionatright angles to the line of the bolt; and'that the bolt proper shallsnugly t the opening through which it shodts, there is a hinged orpivoted connection ata, that admits of the interior portion rising andfalling without carrying the exterior portion with it.

On the interior portion C, there is one fixed arm or hook, c, whichworks in connection with theshoulder b on the hub D, through which theordinary door-- knob shank passes; and there is hinged' to said piece c,at d, an arm, E, vwhose hook e works in connection with the shoulder fon said hub D. y

The object of the two arms, hooks, and shoulders, is that the bolt A maybe drawn vinto the lock by turn'- ing the knobs either way, and whenreleased, the reaction of the spring g shootsxit out again.-

Fis an' eccentric hub, in which the key-pin t is loosely placed, so thatthey will not necessarily move together. Ifthey did, a pair of nippersapplied' to said pin could he used -ior turning the eccentric'.

In `the key G, which is guided by and turns on this pin It, there is astud, l, which enters a hole, 2, in said hub F, by which the huh isturned, and unless this stud be accurately set in the keyorthe hole-'oeaccu rately bored for the stud, the key will not turn the hub.

tric' rim thereof takes against the'interior piece O, and moves itupward against the action of the spring 3,

and so far upward that the shoulder'b, on the hub D,

fails to catch againstthe hooko, and consequently the turning ofthe hubby the knob or handle Will notopcrate on the bolt A, or its tumbler C,and thus the lock is inoperative without the key, and serves as adead-latch lock. A pin or stud, 4, is arranged to prevent :the tuniblerC from rising too high. On what `I term the tumbler C, and which,but'for the fact that it is pivoted to the bolt A, might be called aportion of the bolt itself, there is a projection, 1.4, which, when theeccentric F is turned far enough to raise said tumbler, takesinto arecess, 5, in the eccentric, and there holds unt-il thc key is againused to turn said eccentric'.

A spring, h, bears against the hinged portion E of the tumbler, to keepit Within the range of the shoulder fon the hub, but when the tumbler israised up, said hinged portion E is prevented from rising with it by astud or pin, 6, and, further, it swings the said portion back, so as tobe out-of the reach of the shoulder on the hub, so that in the raised4position of the tumbler the hub cannot act upon either of the arms, andthe bolt cannot be operated.

A guide or way, 7`, on the lock-case,directs the tumbler in its backwardand forward motions, and a projection, k, on the tumbler, coming againstthe lock-case, defines the forward or shooting-motion of the bolt.

'Ih'at the bolt may not partakeof orbe cramped by the upward movement ofthe tumbler, a spring, 7 bears against it, sothat said movement willmerely operate the hinge at a, and not bind the bolt.

A pin, 8, prevents the eccentric from heilig turned in the wrongdirection, or from `going clear' around, as the swell on the eccentricwill not pass said pin, and

when theeccentric arrives at that part of' its throw 1 orbeat, where itraises the tumbler, and receives the projection 14 in its recess, thepin s stops any` further motion in that direction.

The hub D has short journals on its ends, which recess, I, cast orformed inthe cover H, through When this hub F is turned by the key, theeccenl which raised bearing the key-hole is alsomade. This protects theeccentric from being tampered with from the outside of the lock, or thatside of it. l

lhe opposite end of the eccentric has a bearing in the lock-case, byshoulders forming a short journal thereon, and a boss, fm, on that endof the eccentric extends through and beyond the lock-case, on which aknob, I, is fastened, by a through-and-through pin, n, or otherwise, sothat the eccentric may be worked by the knob on the inside, as well asby the key from the outside, and serve all the purposes of a night-latchor lock.V

The hub D is provided with the ordinary square hole o, for receiving theshank ofthe common door or latch-knobs, so that when serving as a latch,it. may be operated from either side ofthe door, but when it is a lockor a night-latch, as above' explained, these knobs will not operate thebolt.

. Figs. 4 and 5 represent another modification of the lock, in which thebolt A and the portion 0 are really united together rigidly, butoccupying the same relations to the outside and inside of the case, asin the iirst-named and described lock. l

Instead of one arm, E, only, hinged to the portion C, there are twoarms, E E, both acting in connection with the hub D and its shoulders,so that by turning the knob and hub in either direction a quarter turn,

- or thereabout, the bolt A will be drawn into the case,

and when released, the reaction of 4 the springs g g shoots the bolt outagain.

The eccentric F, in this modification, has two beats or throws, and two,notches 5 5, one for each ofthe projections 14, on the two4 arms E, soas to throw and hold both hinged arms out of action with the hub D. iThe key-pin fi is loose in this case; also, in the eccentric.

When the eccentric is turned, so, as to allow the hinged arms to comewithin the action of the shoulders on the hub, the springs g, by theirreaction, draw said arms toward the hub, and there hold them withsucientforce to make their action with the hubl certain.

In this lock, there is one key-hole, viz, on the outside of the door,while on the inside it is operated by a knob or handle, I.

Having thus fully described my invention, and shown the several ways inwhich I construct and` operate my locks,

What I claim therein as new, and desire to secure by Letters Patent, isy'lhe combination of the bolt A, its attachment O,

Witnesses:

J oHN WALKER', W. S. LIVINGSTON, Jr.

` N.. Perrin.

and arm or arms E, with the hub D and eccentric F, l

